The effects of grinding-aid agent on the superfine grinding process of mica are introduced. The study has shown that the absorption of grinding-aid in mica powder, contributed to reduction of the pulp viscosity and raise the dispersivity of the powders in grinding process. The experiment has proved that applying grinding aid agent to grinding process can improve the grinding efficiency and reduce the energy consumption.
Mica introduction
Mica is a kind of important nonmetallic mineral materials, in the industry have a wide range of uses. It is an alkali metal and a metal hydrous aluminum silicate clay, mica is layered silicate minerals, can have a good split, along the cleavage plane is divided into very thin sheet strip. Mica powder mica itself has excellent characteristic, there are good sliding performance, strong adhesion coverage, etc.
Mica regardless of crushing and to what extent, is patchy, with good elasticity, toughness. Ultrafine mica powder is high-grade paint, coatings, cosmetics ideal filler. Mica powder is fine, its diameter to thickness ratio is larger, as the filling material can strengthen the stronger.
As everyone knows of comminution energy consumption the biggest efficiency beneficiation plant, the lowest unit operation, when grinding into superfine range, its energy consumption is high, the efficiency is lower. Therefore, how to improve the grinding efficiency, improving the grinding means, more and more attention, the author in the process of grinding using grinding aids, can get good effect, has practical significance.
Grinding-Aid Agent application
With the mechanical crushing more thorough research, more and more people find mechanical crushing process is not only a mechanical process, and is a mechanical and chemical processes, materials in the grinding process, the crystal structure, physical and chemical properties have undergone a series of changes. Research shows that, in the process of grinding to add some chemicals, can significantly improve the grinding conditions, to improve the grinding efficiency. This fully illustrated grinding aid agent in superfine grinding in an important position.
From the above studies can be seen, grinding agent on superfine grinding process is very significant effect. For the grinding aid effect mechanism, mainly Repin Levon and West de proposed” adsorption decreased hardness” and Kerrey Parr’s ” slurry rheology control” two theories, this study combined six partial sodium phosphate, sodium polyphosphate on ultrafine grinding process of mica grinding effects, from different angles, discusses its grinding mechanism.
Grinding-aid agent working principle and operation rules
1. grinding agent six partial sodium phosphate, sodium polyphosphate ultrafine comminution of mica has obvious grinding, grinding agent has certain quantity, when the amount is too much or too little can reduce the grinding effect. Six partial sodium phosphate optimum dosage of 2kg / T, sodium polyphosphate and the optimum dosage of 1.5kg / T ( C = 60% ), sodium polyphosphate grinding effects than the six partial sodium phosphate.
2. grinding agent only when the concentration reaches a certain value, in order to reflect the obvious grinding function, the optimum concentration of C = 60%.
3. six partial sodium phosphate, sodium polyphosphate grinding function of main reducing pulp viscosity, improve the slurry rheology, and improve the grinding efficiency; grinding agent adsorbed on mica surface, the mica electric potential negative larger, increasing the electrostatic repulsion between the particles, thereby enabling stable dispersion of particles, improving grinding efficiency.
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Application of Grinding-Aid Agent in Superfine Grinding Process of Mica
The effects of grinding-aid agent on the superfine grinding process of mica are introduced. The study has shown that the absorption of grinding-aid in mica powder, contributed to reduction of the pulp viscosity and raise the dispersivity of the powders in grinding process. The experiment has proved that applying grinding aid agent to grinding process can improve the grinding efficiency and reduce the energy consumption.
Mica introduction
Mica is a kind of important nonmetallic mineral materials, in the industry have a wide range of uses. It is an alkali metal and a metal hydrous aluminum silicate clay, mica is layered silicate minerals, can have a good split, along the cleavage plane is divided into very thin sheet strip. Mica powder mica itself has excellent characteristic, there are good sliding performance, strong adhesion coverage, etc.
Mica regardless of crushing and to what extent, is patchy, with good elasticity, toughness. Ultrafine mica powder is high-grade paint, coatings, cosmetics ideal filler. Mica powder is fine, its diameter to thickness ratio is larger, as the filling material can strengthen the stronger.
As everyone knows of comminution energy consumption the biggest efficiency beneficiation plant, the lowest unit operation, when grinding into superfine range, its energy consumption is high, the efficiency is lower. Therefore, how to improve the grinding efficiency, improving the grinding means, more and more attention, the author in the process of grinding using grinding aids, can get good effect, has practical significance.
Grinding-Aid Agent application
With the mechanical crushing more thorough research, more and more people find mechanical crushing process is not only a mechanical process, and is a mechanical and chemical processes, materials in the grinding process, the crystal structure, physical and chemical properties have undergone a series of changes. Research shows that, in the process of grinding to add some chemicals, can significantly improve the grinding conditions, to improve the grinding efficiency. This fully illustrated grinding aid agent in superfine grinding in an important position.
From the above studies can be seen, grinding agent on superfine grinding process is very significant effect. For the grinding aid effect mechanism, mainly Repin Levon and West de proposed” adsorption decreased hardness” and Kerrey Parr’s ” slurry rheology control” two theories, this study combined six partial sodium phosphate, sodium polyphosphate on ultrafine grinding process of mica grinding effects, from different angles, discusses its grinding mechanism.
Grinding-aid agent working principle and operation rules
1. grinding agent six partial sodium phosphate, sodium polyphosphate ultrafine comminution of mica has obvious grinding, grinding agent has certain quantity, when the amount is too much or too little can reduce the grinding effect. Six partial sodium phosphate optimum dosage of 2kg / T, sodium polyphosphate and the optimum dosage of 1.5kg / T ( C = 60% ), sodium polyphosphate grinding effects than the six partial sodium phosphate.
2. grinding agent only when the concentration reaches a certain value, in order to reflect the obvious grinding function, the optimum concentration of C = 60%.
3. six partial sodium phosphate, sodium polyphosphate grinding function of main reducing pulp viscosity, improve the slurry rheology, and improve the grinding efficiency; grinding agent adsorbed on mica surface, the mica electric potential negative larger, increasing the electrostatic repulsion between the particles, thereby enabling stable dispersion of particles, improving grinding efficiency.